PHP header not working for Access-Control-Allow-Origin

Question

I am using the jQuery File Upload plugin by Blueimp to upload images to a server. The problem is, the sending server is admin.example.com, and the receiving server

Answer 1

The solution for me was to re-save the PHP file using UTF-8 encoding. Apparently the original text file (that I copied into place and overwrote for the quick test) used was using some other funky encoding.